1. A model to describe the angular dependence of the critical current in a Bi-2223/Ag superconducting tape
- Author
-
O. van der Meer, H.H.J. ten Kate, B. ten Haken, Faculty of Science and Technology, and Energy, Materials and Systems
- Subjects
Critical current ,METIS-200060 ,High-temperature superconductivity ,Gaussian ,Energy Engineering and Power Technology ,Standard deviation ,Angular dependence ,law.invention ,chemistry.chemical_compound ,symbols.namesake ,law ,Bi-2223 ,Perpendicular ,Electrical and Electronic Engineering ,Strontium oxide ,Physics ,Superconductivity ,Condensed matter physics ,Plane (geometry) ,Condensed Matter Physics ,Electronic, Optical and Magnetic Materials ,Magnetic field ,IR-74512 ,chemistry ,Misalignment angle ,symbols - Abstract
A model to describe the angular dependence of the critical current of a superconducting Bi-2223/Ag tape is developed. The model is based on a Gaussian distribution of the misalignment angles of the grains. With this model it is possible to calculate the standard deviation of the misalignment angle of the grains from critical current measurements in a magnetic field oriented perpendicular and parallel to the tape plane. This enables us to determine the critical current behaviour for all orientations of the magnetic field. The theory is confirmed in an experimental way. The angular dependence of the critical current of the measured tape can be described at 77 K in the region between 0 and 200 mT within 3% by using a standard deviation of 7.8° in the misalignment angle.
- Published
- 2001
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